Unsolved
2 Posts
0
1158
November 6th, 2021 16:00
Dell Precision Tower 7810 multiple processor cores problem
I'm trying to install Win 10 Pro x64 for workstations on a refurbished Dell Precision Tower 7810 with 2x Intel Xeon E5-2690 v3, 2600 MHz. Whenever more than 2 processor cores (CPU has 12!) are enabled on both CPU's, OS installation ends up with a BSOD ( Linux and Win10, Legacy boot and UEFI, with or without security ). After enabling only 2 cores I managed to install Win 10 Pro for WS and UBUNTU as well with UEFI. When enabling all cores the system boots neither OS ( WHEA_UNCORRECTABLE_ERROR or MACINE_EXEPTION BSOD)!
My question: does that mean that the rest of the cores are dead? or am I missing some additional BIOS setting? The onboard BIOS hardware diagnostics passes all tests, any idea for an extensive CPU test application? Any hint is appreciated!
Best regards and thanks in advance!
0 events found
No Events found!
mazzinia_
6 Operator
•
1.5K Posts
•
6.2K Points
0
November 7th, 2021 02:00
I'm wondering if whoever sold you the 7810 installed the 2 cpus before selling without testing it aside powering it on.
I'm a paranoid so ... I'm thinking about 2 options :
1) by real bad luck, one of the cpus has issues
2) bad installation of one of the cpus in a socket leading to some socket pins to be bent
Can you still return it ?
Are you able to test it with just one cpu installed ?
Andy812
2 Intern
•
202 Posts
0
November 7th, 2021 15:00
I can not check it now, but if I am not mistaken, the "multicore support" option is applied to all the CPUs equally.
If so, I see 3 options possible.
1)The heat-sink was installed without properly applying thermal grease/plaster, or the protecting tape was not removed from the fresh thermal plaster. So the system boots on its heat-spreading power limit.
2)Damaged socket pins, insufficient testing during RMA
3)Damaged CPU, which is less probable, actually.
O.K., and the RMA board may be simply bad.
emilsg
2 Posts
0
November 8th, 2021 02:00
Thanks for your replies, as I saw it coming - no silver bullet so far! So I'm facing a discussion with the dealer! And it's not going to be easy - the onboard diagnostics is of little help as it checks only memory access and it passes without errors even with all cores enabled, during the test temp was below 68 dgr C, so thermal paste should be OK! Anyway thanks again for your efforts!